Whenever I play a game that plays in full screen with realistic 3d graphics (i.e. not blockland, no offense intended. I mean real-world, not based totally off fiction), such as G-mod or RCT3, the mouse gets all glitchy. Most of the time, the mouse is gone and, every once in a while, when I'm moving it, it will flash on for a second. It's not my Graphics Card, because both of those worked a while back. Are there any Mouse settings (in control panel and such) that I might change to fix this?